Sydney Slack, 6, and her younger sister Sierra were hands down the youngest of those attending yesterday’s ceremonial opening of Saint Elizabeth Terrace housing complex for low-income, independent seniors on Warwick Neck yesterday. Their grandmother, Roberta B. Merkle, executive vice president of Saint Elizabeth Community, accompanies the girls. The 34-unit apartment building was completed earlier this year and already 26 units are occupied. Saint Elizabeth President and CEO Steve Horowitz said the facility is likely the last of its kind to be funded by the Department of Housing and Urban Development, as the program has not been continued. At yesterday’s event, Mayor Scott Avedisian noted how long Saint Elizabeth and Cornerstone Adult Services have worked on the project, adding that the quality of the finished product has made it worth it. Horowitz said that throughout the process, Saint Elizabeth kept “it’s eye on the prize and the seniors are our prize.” The $5.2 million complex was designed by Durkee, Brown, Viverios & Werenfels Architects and built by Calson Construction Co. Following a brief speaking event, visitors got to tour the complex and enjoy coffee and baked goods. And Mayor Avedisian used the opportunity to meet some of the city’s newest residents.